you can't, there is a overpowered health cheat though.
No gta4 is only for x box 360 and playstation 3
you can't to my knowledge.
Yes.
for xbox 360 ofcorce. xbox 360 is better than ps3
yes, gta4.net has all the cheats, not many cheats are in the game though.
there is none.
no
No, PS3 players cannot play with Xbox 360 players online.
There is no jetpack on GTA4.
no xbox 360 games do not work on original xboxs
Invincibilty packs are located throughout various stages. Simply jump on one to activate invincibilty.
There are no cheats for cod 5 there are glitches but not cheats like infinite ammo or invincibilty because that would be unfair.....But you can always hack